Bee and Pimon's place is great, exactly as described on the listing and reviews. They made everything they could to help us have a perfect stay, and Pimon is adorable and was very kind giving us extra advice on our entire trip, not only Bangkok. Communication with them is wonderful, Bee replied to the messages almost instantly (please take the time difference between Thailand and Canada into account) and we even had a phone to call Pimon if needed.
The only thing that kept us from finding the experience absolutely fantastic was that we had to take transportation everywhere - please note this is expected in a big city like Bangkok, the flat is located real close to BTS and Ferry, but is important to note that there are no major attractions within walking distance - unless you are keen to more touristy places like Asiatique - and for this reason we had to plan better our sightseeing in order to spend the entire day out and try to avoid heavy traffic. This didn't interfere on our overall experience but I find it important to take into account when booking.
Thanks a lot Bee and Pimon for the wonderful stay and warm welcome in Bangkok!